main.py

from tkinter import *
from tkinter import messagebox
from random import choice, randint, shuffle
import pyperclip
import json

# ---------------------------- PASSWORD GENERATOR ------------------------------- #

letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
           'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
           'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
symbols = ['!', '#', '$', '%', '&', '(', ')', '*', '+']


def pw_generate():
    password_entry.delete(0, END)

    password_letters = [choice(letters) for _ in range(randint(8, 10))]
    password_symbols = [choice(symbols) for _ in range(randint(2, 4))]
    password_numbers = [choice(numbers) for _ in range(randint(2, 4))]

    password_list = password_numbers + password_letters + password_symbols
    shuffle(password_list)
    password = "".join(password_list)

    password_entry.insert(0, password)
    pyperclip.copy(password)


# ---------------------------- FIND PASSWORD ------------------------------- #
def find_password():
    website = website_entry.get()
    try:
        with open("data.json", "r") as data_file:
            data = json.load(data_file)
    except FileNotFoundError:
        messagebox.showinfo(title="Error", message="File not found")
    else:
        if website in data:
            data_email = data[website]["email"]
            data_password = data[website]["password"]
            messagebox.showinfo(title="Found", message=f"Email:\n {data_email}\n"                                                f"Password:\n {data_password}")
        else:
            messagebox.showinfo(title="Not Found", message=f"No details for {website} "
                                                           f"exist.")


# ---------------------------- SAVE PASSWORD ------------------------------- #
def save():
    website = website_entry.get()
    email = email_entry.get()
    password = password_entry.get()
    new_data = {
        website: {
            "email": email,
            "password": password,
        }
    }

    if len(website) == 0 or len(email) == 0 or len(password) == 0:
        messagebox.showinfo(title="error", message="One or more of your entries are empty")
    else:

        try:
            with open("data.json", "r") as data_file:
                # Reading old data
                data = json.load(data_file)
        except FileNotFoundError:
            with open("data.json", "w") as data_file:
                json.dump(new_data, data_file, indent=4)
        except json.decoder.JSONDecodeError:
            with open("data.json", mode="w") as file:
                json.dump(new_data, file, indent=4)
        else:
            # Updating old data with new data
            data.update(new_data)

            with open("data.json", "w") as data_file:
                # Saving updated data
                json.dump(data, data_file, indent=4)
        finally:
            website_entry.delete(0, END)
            password_entry.delete(0, END)


# ---------------------------- UI SETUP ------------------------------- #
window = Tk()
window.title("Password Manager")
window.config(pady=50, padx=50)

lock_image = PhotoImage(file="logo.png")
canvas = Canvas(width=200, height=200)
canvas.create_image(100, 100, image=lock_image)
canvas.grid(column=1, row=0)

# Website
web_label = Label(text="Website: ")
web_label.grid(column=0, row=1)
website_entry = Entry()
website_entry.config(width=21)
website_entry.grid(column=1, row=1)
website_entry.focus()

# Email/Username
email_label = Label(text="Email/Username: ")
email_label.grid(column=0, row=2)
email_entry = Entry()
email_entry.config(width=35)
email_entry.grid(column=1, row=2, columnspan=2)
email_entry.insert(0, "alangarcia1996@gmail.com")

# Password
pw_label = Label(text="Password: ")
pw_label.grid(column=0, row=3)
password_entry = Entry(width=21)
password_entry.grid(column=1, row=3)
pw_button = Button(text="Generate Password", command=pw_generate)
pw_button.grid(column=2, row=3)

# Add
add_button = Button(text="Add", width=36, command=save)
add_button.grid(column=1, row=4, columnspan=2)

# Search Button
search_button = Button(text="Search", width=13, command=find_password)
search_button.grid(column=2, row=1)

window.mainloop()